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  • 1
    Electronic Resource
    Electronic Resource
    Combined linkage maps and QTLs in sugar beet (Beta vulgaris L.) from different populations (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 118 (1999), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The construction of genetic maps is an expensive and time-consuming process. The breeder is therefore interested in using maps developed from other mapping populations but this is only possible if the genetic structure is similar for the chromosomal regions of interest. In this paper, maps of three populations of sugar beet (Beta vulgaris L.) with common polymorphic marker loci are compared. Maps were constructed with MAPMAKER 3.0 and JOINMAP 2.0. Both mapping programs gave, in general, the same order for common markers. However, the number of common markers was too low to construct a combined map for all chromosomes. For one population, in contrast to the other two, the map constructed with MAPMAKER 3.0 was much longer than that constructed with JOINMAP 2.0.For two of these populations yield traits were also available from different environments. For quantitative trait loci (QTL) analysis of the yield data, the packages MAPMAKER/QTL 1.1 and PLABQTL were used. No QTL common for the two populations could be detected. The program and the version used strongly influenced the estimated positions of QTLs. There was also a strong interaction with environments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1999.tb01513.x
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  • 2
    Electronic Resource
    Electronic Resource
    Does elevated atmospheric CO2 concentration inhibit mitochondrial respiration in green plants? (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 22 (1999), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: 
ATP, adenosine triphosphate
Km, Michaelis-Menton coefficient
Ca, concentration of CO2 in the air (μmol mol–1)
NAD, oxidized nicotin adenine dinucleotide
NADH, reduced nicotin adenine dinucleotide
NADP, oxidized nicotin adenine phosphate dinucleotide
NADPH, reduced nicotine adenine phosphate dinucleotide
R, rate of respiration per unit DW [μmol g 
DW–1], Rubisco, ribulose-1,5-bisphosphate carboxylase/oxygenase
Vc,max, maximum in vivo rate of carboxylation at Rubisco (μmol m–2 s–1)

There is abundant evidence that a reduction in mitochondrial respiration of plants occurs when atmospheric CO2 (Ca) is increased. Recent reviews suggest that doubling the present Ca will reduce the respiration rate [per unit dry weight (DW)] by 15 to 18%. The effect has two components: an immediate, reversible effect observed in leaves, stems, and roots of plants as well as soil microbes, and an irreversible effect which occurs as a consequence of growth in elevated Ca and appears to be specific to C3 species. The direct effect has been correlated with inhibition of certain respiratory enzymes, namely cytochrome-c-oxidase and succinate dehydrogenase, and the indirect or acclimation effect may be related to changes in tissue composition. Although no satisfactory mechanisms to explain these effects have been demonstrated, plausible mechanisms have been proposed and await experimental testing. These are carbamylation of proteins and direct inhibition of enzymes of respiration. A reduction of foliar respiration of 15% by doubling present ambient Ca would represent 3 Gt of carbon per annum in the global carbon budget.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3040.1999.00438.x
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  • 3
    Electronic Resource
    Electronic Resource
    Condensation of steam on the surface of hard coated copper discs (1997)
    Springer
    Heat and mass transfer 32 (1997), S. 149-156 
    Details
    ISSN: 1432-1181
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung  Die Film-(FK) und Tropfenkondensation (TK) von Wasserdampf bei Umgebungsdruck wurde unter-sucht. Dabei wurden mit Silicium modifizierte amorphe Kohlenwasserstoff-Schichten (a-C : H-Si) in unterschiedlichen Dicken auf Kupferscheiben eingesetzt. Mit der TK werden an vertikal orientierten Kondensatoroberflächen Wärmeüber-gangskoeffizienten erreicht, die um den Faktor 10 größer sind als bei FK, deren Wärmeübergangskoeffizienten als Funktion der Unterkühlung in sehr guter Übereinstimmung zur Nusseltschen Wasserhauttheorie ermittelt wurden. Bei einer Wandneigung von 180° (waagerechte Wand und hängende Tropfen) betragen die Wärmeübergangskoeffizienten bei TK nur 40% der Maximalwerte, die bei vertikaler Orientierung erreicht werden. Der Mittelwert über die Neigungswinkel von 30°–180° wird berechnet zu 87.6% der Maximalwerte bei der 90°- Orientierung. Die Nutzung von Teilbeschichtungen auf den Kupferscheiben zeigt eine starke Erhöhung der Wärme-übertragungsleistung bei TK im Vergleich zur FK selbst für relativ kleine Beschichtungsanteile (z. B. erreicht eine Teilbe-schichtung von nur 19% der Kondensatoroberfläche einen Vergrößerungsfaktor von 2,3 bei einem Kühlwasservolumen-strom von 4 m3/h). Die diamantähnlichen Eigenschaften der a-C : H-Schichten stellen hohe Standzeit und damit auch eine Möglichkeit zur Realisierung der TK in technischen Systemen in Aussicht.
    Notes: Abstract  At atmospheric pressure filmwise (FWC) and dropwise (DWC) condensation have been studied on the surface of copper discs which were coated by silicon-modified amorpheous hydrogenated carbon (a-C : H-Si) films of different thickness. On vertically oriented surfaces the DWC heat transfer coefficients were found to be larger by a factor of about 10 than the FWC coefficients which follow as function of surface subcooling temperature quite well Nusselt’s theory. Varying the angle of surface inclination, the DWC coefficient decreased down to about 40% of the vertical-surface values for 180° (face down orientation). The mean value for all inclination angles between 30° and 180° was calculated to be 87.6% of the maximum value for the 90°-orientation. Partly coating of the copper surface indicates a strong heat transfer enhancement of DWC over FWC even for relative small coated parts (e.g., 19%-coating yields an enhancement by a factor 2.3 for a cooling water flow rate of 4 m3/h). The diamond like properties of the a-C : H-coatings promise long stand times and thus application also in real technical condensation systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002310050105
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  • 4
    Electronic Resource
    Electronic Resource
    Identifiability of a stochastic model for cell debris in flow cytometry (1998)
    Springer
    Journal of mathematical biology 37 (1998), S. 329-340 
    Details
    ISSN: 1432-1416
    Keywords: Key words: Identifiability ; Stochastic model ; Flow cytometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract.  One of the most important problems in recovering DNA distribution from flow cytometric DNA measurements is the presence of background noise. In this paper, we analyse a probabilistic model recently proposed for background debris distribution and based on a specific probabilistic mechanism for the DNA fragmentation process of the cell nucleus. In particular, we carry out some sufficient conditions to uniquely identify the original DNA distribution from the flow cytometric data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002850050132
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  • 5
    Electronic Resource
    Electronic Resource
    Actinoplanic acids A and B as novel inhibitors of farnesyl-protein transferase (1995)
    Springer
    Applied microbiology and biotechnology 43 (1995), S. 610-616 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Actinoplanic acids A and B are macrocyclic polycarboxylic acids that are potent reversible inhibitors of farnesyl-protein transferase. Actinoplanic acids A and B were isolated from Actinoplanes sp. MA 7066 while actinoplanic acid B was isolated from both MA 7066 and Streptomyces sp. MA 7099. Actinoplanic acids A and B are competitive with respect to farnesyl diphosphate and are selective inhibitors of farnesyl-protein transferase because they do not inhibit geranylgeranyl-protein transferase type 1 or squalene synthase. MA 7066 is believed to be a novel species of actinomycetes while MA 7099 is believed to be a novel strain of Streptomyces violaceusniger on the basis of morphological, biochemical and chemotaxonomic characteristics as well as its production of actinoplanic acids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00164762
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  • 6
    Electronic Resource
    Electronic Resource
    Actinoplanic acids A and B as novel inhibitors of farnesyl-protein transferase (1995)
    Springer
    Applied microbiology and biotechnology 43 (1995), S. 610-616 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract  Actinoplanic acids A and B are macrocyclic polycarboxylic acids that are potent reversible inhibitors of farnesyl-protein transferase. Actinoplanic acids A and B were isolated from Actinoplanes sp. MA 7066 while actinoplanic acid B was isolated from both MA 7066 and Streptomyces sp. MA 7099. Actinoplanic acids A and B are competitive with respect to farnesyl diphosphate and are selective inhibitors of farnesyl-protein transferase because they do not inhibit geranylgeranyl-protein transferase type 1 or squalene synthase. MA 7066 is believed to be a novel species of actinomycetes while MA 7099 is believed to be a novel strain of Streptomyces violaceusniger on the basis of morphological, biochemical and chemotaxonomic characteristics as well as its production of actinoplanic acids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00164762
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  • 7
    Electronic Resource
    Electronic Resource
    Sekundäre Veränderungen im Holz akut belasteter Fichten (Picea abies [L.] Karst.) in Hochlagen des Osterzgebirges (1996)
    Springer
    Holz als Roh- und Werkstoff 54 (1996), S. 243-249 
    Details
    ISSN: 1436-736X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: In the heavily polluted and thinned-out spruce stands at the high altitudes of the ore-mountains extreme wind stresses initiate in some trees slip planes which accumulate in the vicinity of rays and branch tracers. The slip plane zones are subsequently infected by wood degrading fungi, in particular by Stereum sanguinolentum (Alb. et Schw.: Fr.) Fr. resulting in a simultaneous decay of carbohydrates and lignin in the cell walls. The combined effect of wind stress and cell-wall degradation apparently induces brash, staircase-like fractures in some stems, which limitates the utilization of the timber. Eventually reduced immissions and an improved stand structure will help avert this kind of damage and spruce grown at this site will again satisfy standard wood quality requirements.
    Notes: Mit Hilfe der Polarisationsmikroskopie kombiniert mit Phasenkontrastierung und elektronenmikroskopischen Verfahren wurden die Bildung, Verteilung und Ausdehnung von Mikrostauchlinien ,,slip planes“ in den Zellwänden analysiert und ihre Bedeutung als bruchauslösende Initialstellen quantifiziert. Aus den Bruchzonen wurden holzzerstörende und holzverfärbende Pilze isoliert und taxonomisch bestimmt. Das Ausmaß des Holzabbaus wurde auf zellulärer und subzellulärer Ebene mit Hilfe der Fluoreszenzmikroskopie und UV-Spektroskopie charakterisiert. In den stark belasteten und aufgelichteten Fichtenbeständen der Hochlagen des Erzgebirges werden durch extreme Windbelastung in einzelnen Bäumen Mikrostauchlinien induziert, die sich im Bereich von Holzstrahlen und Astspuren häuften. Diese Stauchlinien wurden sekundär von holzabbauenden Pilzen, insbesondere durch Stereum sanguinolentum (Alb. et Schw.: Fr.) Fr. besiedelt. In den Zellwänden dieser Zonen war ein simultaner Abbau von Gerüstkohlenhydraten und Lignin nachweisbar. Diese Beeinträchtigung kann bei einzelnen Stämmen kurzfaserige, treppenförmige Windbrüche verursachen. Bei einer verbesserten Bestandesstruktur bei zugleich rückläufiger Immission verdient die Fichte aus Sicht der erreichbaren Holzeigenschaften weiterhin Berücksichtigung.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001070050175
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  • 8
    Electronic Resource
    Electronic Resource
    Untersuchung der dynamischen Belastbarkeit des Holzes sekundär geschädigter Fichten (Picea abies [L.] Karst.) aus extrem windexponierten Hochlagen des Osterzgebirges (1996)
    Springer
    Holz als Roh- und Werkstoff 54 (1996), S. 313-319 
    Details
    ISSN: 1436-736X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Im Holz der immissionsbelasteten und entsprechend zwar physiologisch geschwächten, aber nicht sekundär geschädigten Fichten konnte dagegen keine Beeinträchtigung der Bruch- schlagarbeit festgestellt werden. Aus den Untersuchungen geht hervor, daß das Holz von Fichten aus extrem immissionsbelasteten Hochlagenstandorten des Osterzgebirges nach sorgfältiger Aussortierung von sekundär geschädigten Einzelbäumen uneingeschränkt verwendet werden kann.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001070050193
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  • 9
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    Function of von Willebrand factor after crossed bone marrow transplantation between normal and von Willebrand disease pigs: effect on arterial thrombosis in chimeras. (1995)
    National Academy of Sciences
    Details
    Publication Date: 1995-03-28
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 10
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    Map-based cloning of chloronerva, a gene involved in iron uptake of higher plants encoding nicotianamine synthase (1999)
    National Academy of Sciences
    Details
    Publication Date: 1999-06-08
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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